Automatic cutting and sewing machine

Abstract

The application provides an automatic cutting and splicing integrated sewing machine, which comprises a rack, a cloth feeding roller assembly arranged on the rack, a portal frame installed on the rack, a first sliding groove formed in the portal frame, a moving table slidingly arranged at the first sliding groove, two second sliding grooves spaced apart on the moving table, two lifting seats respectively slidingly arranged in the second sliding grooves, a supporting rod fixed to the bottom of one of the lifting seats, a sewing mechanism installed at the bottom of the supporting rod, a rotating shaft rotatably arranged at the bottom of the other lifting seat, and a cutting mechanism installed at the bottom of the rotating shaft, two slide rails fixedly arranged on the rack, and the slide rails penetrating through the bottom of the portal frame and slidingly connected with the portal frame. The application solves the problems of low automation degree, unstable precision of bevel cutting, manual transportation of cut cloth, large splicing positioning error, and poor consistency of sewing of the existing sewing processing equipment.

Description

Technical Field

[0001] This invention relates to the field of sewing machines, and more particularly to an automated sewing machine that integrates cutting and splicing. Background Technology

[0002] Currently, in the processing of industrial fabrics, curtain fabrics, or finished belt fabrics, it is often necessary to first cut the fabric at a set angle, and then splice and sew the ends of the two cut pieces of fabric together.

[0003] Existing equipment often separates cutting, conveying, alignment, and sewing into different workstations. During manual handling or repositioning, fabric is prone to skewing, wrinkling, and end misalignment. This is especially problematic when 45° or 55° angled cuts are required, as the cutting angle cannot be kept consistent with the subsequent seam alignment, resulting in crooked stitches and uneven seams, affecting the stability of the finished belts or fabric products. While some equipment has separate cutting or sewing functions, it is difficult to achieve continuous coordination of fabric pressing, bias cutting, conveying, sewing, and joining on the same frame.

[0004] Therefore, it is necessary to provide a new automated cutting and sewing machine that integrates cutting and splicing to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides an automated cutting and splicing integrated sewing machine, which solves the problems of low automation, unstable oblique cutting accuracy, need for manual transfer of cut fabric, large splicing positioning error, and poor sewing consistency in existing sewing processing equipment.

[0006] The automated cutting and splicing integrated sewing machine provided by the present invention includes a frame, a feed roller assembly on the frame, a gantry frame mounted on the frame, a first slide groove on the gantry frame, a movable platform slidably disposed at the first slide groove, two second slide grooves spaced apart on the movable platform, and lifting seats slidably disposed in the two second slide grooves respectively, one of the lifting seats having a support rod fixed at its bottom, a sewing mechanism mounted at its bottom, and the other lifting seat having a rotating shaft rotatably disposed at its bottom, a cutting mechanism mounted at its bottom, and two slide rails fixed at intervals on the frame, the slide rails passing through the bottom of the gantry frame and slidably connected to the gantry frame.

[0007] In a preferred embodiment, a drag chain is installed on one side of the mobile platform, the drag chain is connected to the mobile platform, and the mobile platform is capable of moving along the first slide rail.

[0008] In a preferred embodiment, two electrically operated telescopic rods are fixed at intervals on one side of the mobile platform, and the output ends of the two electrically operated telescopic rods are respectively fixedly connected to the two lifting seats.

[0009] In a preferred embodiment, a positioning motor is installed on another of the lifting seats, the output end of which is connected to the rotating shaft, and the rotating shaft is movably mounted on the bottom of the lifting seat via a bearing.

[0010] In a preferred embodiment, the cutting mechanism includes a rotating blade driven by a motor, and the adjusting motor can drive the cutting mechanism to rotate via the rotating shaft to adjust the cutting angle of the cutting mechanism relative to the fabric.

[0011] In a preferred embodiment, a drive shaft is movably disposed at the gantry frame, a gear is mounted on the drive shaft, and a rack is mounted on the frame. The gear meshes with the rack to enable the gantry frame to move along the slide rail.

[0012] In a preferred embodiment, each slide rail is fixed with a pair of slide columns, and a movable plate is slidably disposed on the two slide columns. Two pressure plates are fixedly spaced between the two movable plates, and the two pressure plates are respectively located on both sides of the gantry frame.

[0013] In a preferred embodiment, cylinders are fixed on both sides of the frame, and the output end of the cylinders is fixedly connected to the movable plate so as to drive the pressing plate to move and press the fabric through the movable plate.

[0014] The beneficial effects of this invention are: 1. This invention sets two lifting seats on the moving platform and installs the sewing mechanism and the cutting mechanism on the corresponding lifting seats respectively, so that the cutting action and the sewing action can be independently lifted and controlled on the same gantry. When the cutting mechanism is working, the sewing mechanism can be in a avoidance state, and when the sewing mechanism is working, the cutting mechanism can be in a avoidance state, thereby reducing the interference between the two and making the equipment operation more stable.

[0015] 2. This invention, through the cooperation of the adjusting motor, rotating shaft and cutting mechanism, enables the cutting mechanism to adjust the cutting angle according to processing needs, thereby realizing the oblique cutting of the fabric. This structure can adapt to the cutting requirements of fabric ends at different angles such as 45° and 55°, so that the cut fabric can meet the splicing scenarios of different finished belts or fabric products, thus improving the applicability of the equipment.

[0016] 3. The present invention enables the cutting mechanism to perform oblique cutting of the fabric according to a predetermined trajectory by coordinating the movement of the gantry frame along the slide rail, the movement of the moving table along the first slide groove, and the adjustment of the cutting mechanism's own angle. Compared with the method of simply manually adjusting the fabric angle before cutting, the present invention can reduce manual placement errors and improve the accuracy of oblique cutting and the consistency of repeated processing.

[0017] 4. This invention sets a transmission shaft, gears, and racks at the gantry frame, and uses the meshing of the gears and racks to drive the gantry frame to move along the slide rail, making the movement of the gantry frame more stable and reliable. This helps to ensure the stability of the motion trajectory of the cutting mechanism and the sewing mechanism during the processing, and reduces cutting deviation and sewing skew. By setting a movable plate on the sliding column and a pressure plate between the two movable plates, and then driving the movable plate to move by a cylinder, the pressure plate can press the fabric tightly before cutting or sewing. This structure can prevent the fabric from curling, wrinkling and shifting position during the cutting mechanism or the sewing mechanism, and improve the neatness of the cutting edges and splicing seams. Attached Figure Description

[0018] Figure 1 The main structure of the automated cutting and splicing integrated sewing machine provided by this invention is shown in stereoscopic view. Figure 1 ; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of A shown; Figure 3 The main structure of the automated cutting and splicing integrated sewing machine provided by this invention is shown in stereoscopic view. Figure 2 ; Figure 4 for Figure 1 Side view; Figure 5 for Figure 1 Top view.

[0019] The following are the labels in the diagram: 1. Frame; 2. Feed roller assembly; 3. Gantry frame; 4. First chute; 5. Moving table; 6. Cable chain; 7. Second chute; 8. Lifting seat; 9. Support rod; 10. Sewing mechanism; 11. Rotating shaft; 12. Adjustment motor; 13. Cutting mechanism; 14. Slide rail; 15. Drive shaft; 16. Gear; 17. Rack; 18. Sliding column; 19. Moving plate; 20. Pressing plate; 21. Electric telescopic rod; 22. Cylinder. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 ,in Figure 1 Stereoscopic view of the main structure of the automated cutting and splicing integrated sewing machine provided by this invention Figure 1 ; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of A shown; Figure 3Stereoscopic view of the main structure of the automated cutting and splicing integrated sewing machine provided by this invention Figure 2 ; Figure 4 for Figure 1 Side view; Figure 5 for Figure 1 Top view.

[0022] In the specific implementation process, such as Figures 1-5 As shown, the machine includes a frame 1, which serves as the supporting foundation for the entire machine and is used to install components related to fabric feeding, pressing, cutting, splicing, and sewing. A fabric feeding roller assembly 2 is mounted on the frame 1, which is used to guide the fabric to be processed into the processing area of ​​the frame 1. The fabric feeding roller assembly 2 can adopt a roller structure with rollers arranged vertically opposite each other. At least one roller is connected to a power source to drive the fabric forward through rotation; the other roller can press the fabric to keep it flat during transport, reducing fabric deviation, loosening, or wrinkling.

[0023] A gantry frame 3 is mounted on the frame 1, spanning the fabric conveying path and supporting the cutting and sewing components. A first slide rail 4 is provided on the gantry frame 3, and a movable platform 5 is slidably mounted on the first slide rail 4, moving along the gantry frame 3. A drag chain 6 is mounted on one side of the movable platform 5, bending and unfolding synchronously with the movement of the platform 5. This drag chain provides traction and protection for the wires, air hoses, or control lines connected to the platform 5, preventing tangling, pulling, or wear during the platform's reciprocating movement. The movement of the movable platform 5 can be achieved using common linear drive methods such as lead screw modules, synchronous belt modules, rack and pinion modules, or pneumatic slides, as long as it can stably move the platform 5 along the first slide rail 4.

[0024] Two second slide grooves 7 are spaced apart on one side of the moving platform 5, and lifting seats 8 are slidably installed in each of the two second slide grooves 7. Two electric telescopic rods 21 are fixedly fixed on one side of the moving platform 5, and the output ends of the two electric telescopic rods 21 are fixedly connected to the two lifting seats 8 respectively. Through the extension and retraction of the two electric telescopic rods 21, the corresponding lifting seats 8 can be moved up and down along the second slide grooves 7 respectively, so that the sewing mechanism 10 and the cutting mechanism 13 can move closer to or further away from the fabric respectively. With this arrangement, cutting and sewing can share the moving base of the moving platform 5 and the gantry 3, while the cutting and sewing actions can be controlled separately by the two lifting seats 8, avoiding interference between the cutting mechanism 13 and the sewing mechanism 10 on the fabric when they are not in operation.

[0025] One of the lifting seats 8 has a support rod 9 fixed to its bottom, and a sewing mechanism 10 is installed at the bottom of the support rod 9. The sewing mechanism 10 can adopt an existing sewing machine head structure, and its interior may include a needle bar assembly for driving the needle to move up and down, a presser foot assembly for holding the fabric, a thread take-up and clamping assembly for feeding the thread, a rotary hook or bobbin assembly for forming stitches with the needle, and a drive assembly for driving the above components. A groove is provided on the surface of the frame 1 at a position corresponding to the sewing mechanism 10. This groove is used to allow the needle to pass through when it descends, and also provides installation and working space for the bobbin thread assembly or the stitch forming area. During sewing, the sewing mechanism 10 descends with the corresponding lifting seat 8, so that the presser foot contacts and presses the fabric first. Then, the needle moves up and down through the fabric under the drive and cooperates with the bobbin thread below to form a stitch, thereby completing the sewing of the two pieces of fabric together.

[0026] Another lifting seat 8 has a rotating shaft 11 movably mounted on its bottom via bearings. An adjusting motor 12 is installed on this lifting seat 8, and the output end of the adjusting motor 12 is connected to the rotating shaft 11 via a coupling. A cutting mechanism 13 is installed at the bottom of the rotating shaft 11. The cutting mechanism 13 may include a rotating blade driven by a motor. During operation, the rotating blade rotates at high speed and approaches the fabric under the influence of the corresponding lifting seat 8 to cut the fabric. Because the rotating shaft 11 can rotate under the drive of the adjusting motor 12, the cutting mechanism 13 can change its angle relative to the fabric conveying direction, enabling it to perform both transverse and bevel cuts. For example, when a 45° or 55° beveled fabric end is required, the adjusting motor 12 can drive the rotating shaft 11 to rotate to the corresponding angle, so that the cutting direction of the cutting mechanism 13 forms a predetermined angle with the fabric edge, thereby obtaining a beveled end face that meets the requirements of subsequent splicing.

[0027] Two slide rails 14 are fixed at intervals on the frame 1. The slide rails 14 pass through the bottom of the gantry frame 3 and are slidably connected to the gantry frame 3, allowing the gantry frame 3 to move along the length of the frame 1. A drive shaft 15 is movably installed at the gantry frame 3. The drive shaft 15 is driven by a motor installed inside the gantry frame 3. A gear 16 is installed on the drive shaft 15, and a rack 17 is installed on the frame 1. The gear 16 meshes with the rack 17. When the motor drives the drive shaft 15 to rotate, the drive shaft 15 drives the gear 16 to rotate. The gear 16 moves along the rack 17, thereby moving the gantry frame 3 along the slide rails 14. Through the cooperation of the gear 16 and the rack 17, the movement of the gantry frame 3 is more stable, ensuring that the cutting mechanism 13 or the sewing mechanism 10 moves along a predetermined path above the fabric.

[0028] During the cutting process, the fabric is first conveyed to the processing area of ​​the frame 1 via the feed roller assembly 2. Then, the cutting angle of the cutting mechanism 13 is adjusted by the positioning motor 12. The corresponding electric telescopic rod 21 then lowers the lifting seat 8, which houses the cutting mechanism 13, bringing the rotating blade closer to the fabric. At this time, the gantry 3 can move along the slide rail 14, and the moving table 5 can move along the first slide groove 4. Together, they allow the cutting mechanism 13 to pass over the fabric surface along a set oblique trajectory, thus achieving oblique cutting of the fabric. Compared to relying solely on manual placement of the fabric for oblique cutting, this structure can improve the stability and repeatability of oblique cutting by jointly controlling the cutting trajectory through the longitudinal movement of the gantry 3, the lateral movement of the moving table 5, and the angle adjustment of the cutting mechanism 13.

[0029] Each slide rail 14 is fixed with a pair of slide columns 18, and a movable plate 19 is slidably mounted on the two slide columns 18. Two pressure plates 20 are fixedly fixed between the two movable plates 19, and the two pressure plates 20 are located on both sides of the gantry frame 3. Cylinders 22 are fixed on both sides of the frame 1, and the output end of the cylinder 22 is fixedly connected to the movable plate 19. When the cylinder 22 extends, it can push the movable plate 19 to move along the slide column 18, and the movable plate 19 drives the two pressure plates 20 to press the fabric synchronously. When the cylinder 22 retracts, the movable plate 19 drives the pressure plates 20 away from the fabric, so that the fabric can continue to be conveyed. The two pressure plates 20 are arranged on both sides of the gantry frame 3, which can press the fabric on both sides of the processing area before cutting or sewing, to prevent the fabric from curling, shifting or wrinkling when the cutting mechanism 13 cuts in or the sewing mechanism 10 moves.

[0030] After the bevel cut is completed, the feed roller assembly 2 continues to pull the fabric forward, allowing the cut fabric ends to enter the splicing area. For two pieces of fabric that need to be spliced, the beveled ends of the two pieces can be brought close together and aligned. Then, the cylinder 22 drives the pressure plate 20 to press down, fixing the splicing area onto the frame 1. Subsequently, the electric telescopic rod 21 connected to the sewing mechanism 10 drives the corresponding lifting seat 8 to descend, causing the presser foot of the sewing mechanism 10 to press down the fabric, and the sewing mechanism 10 begins to work. During the sewing process, the gantry 3 can move along the slide rail 14, and the moving table 5 can move along the first slide groove 4, thereby driving the sewing mechanism 10 to move along the splicing seam, so that the seam can be continuously formed along the beveled edge or the predetermined splicing line. Since the fabric has been pressed down by the pressure plate 20 before sewing, the fabric is less likely to misalign or shift during sewing.

[0031] The working principle of this invention is as follows: In use, the fabric to be processed is first fed into the processing area of ​​the frame 1 by the feed roller assembly 2; then, the cylinder 22 pushes the moving plate 19 to move along the sliding column 18, causing the pressing plate 20 to press the fabric tightly; next, the adjusting motor 12 adjusts the angle of the cutting mechanism 13 through the rotating shaft 11, so that the cutting mechanism 13 can adapt to straight cutting or oblique cutting requirements such as 45° or 55°; subsequently, the electric telescopic rod 21 drives the lifting seat 8, which is equipped with the cutting mechanism 13, to descend, and cooperates with the movement of the gantry 3 and the moving table 5 to complete the cutting; after cutting, the cutting mechanism 13 rises, and the fabric continues to be conveyed to the splicing position; then, the pressing plate 20 presses the area to be sewn, the lifting seat 8, which is equipped with the sewing mechanism 10, descends, and the sewing mechanism 10 completes the sewing along the splicing line. Thus, the fabric can continuously complete feeding, pressing, oblique cutting, splicing positioning, and sewing on the same frame 1, reducing manual transfer and repeated positioning.

[0032] The circuit control, pneumatic control, and motor control involved in this invention can all be implemented using existing control methods. For example, the start-stop and action sequence of the feed roller assembly 2, the position motor 12, the motor driving the transmission shaft 15, the electric telescopic rod 21, and the cylinder 22 can be controlled by a controller.

[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An automated cutting and splicing integrated sewing machine, comprising a frame (1), characterized in that, The frame (1) is provided with a fabric feed roller assembly (2), and a gantry frame (3) is installed on the frame (1). A first slide groove (4) is provided on the gantry frame (3). A moving platform (5) is slidably provided at the first slide groove (4). Two second slide grooves (7) are provided at intervals on the moving platform (5). Lifting seats (8) are slidably provided in the two second slide grooves (7). A support rod (9) is fixed at the bottom of one of the lifting seats (8). A sewing mechanism (10) is installed at the bottom of the support rod (9). A rotating shaft (11) is rotatably provided at the bottom of the other lifting seat (8). A cutting mechanism (13) is installed at the bottom of the rotating shaft (11). Two slide rails (14) are fixed at intervals on the frame (1). The slide rails (14) pass through the bottom of the gantry frame (3) and are slidably connected to the gantry frame (3).

2. The automated cutting and splicing integrated sewing machine according to claim 1, characterized in that, A drag chain (6) is installed on one side of the mobile platform (5), the drag chain (6) is connected to the mobile platform (5), and the mobile platform (5) can move along the first slide groove (4).

3. The automated cutting and splicing integrated sewing machine according to claim 1, characterized in that, Two electric telescopic rods (21) are fixed at intervals on one side of the mobile platform (5), and the output ends of the two electric telescopic rods (21) are respectively fixedly connected to the two lifting seats (8).

4. The automated cutting and splicing integrated sewing machine according to claim 1, characterized in that, Another lifting seat (8) is equipped with a positioning motor (12), the output end of which is connected to the rotating shaft (11), which is movably mounted on the bottom of the lifting seat (8) via a bearing.

5. The automated cutting and splicing integrated sewing machine according to claim 1, characterized in that, The cutting mechanism (13) includes a rotating blade driven by a motor. The adjusting motor (12) can drive the cutting mechanism (13) to rotate via the rotating shaft (11) to adjust the cutting angle of the cutting mechanism (13) relative to the fabric.

6. The automated cutting and splicing integrated sewing machine according to claim 1, characterized in that, A drive shaft (15) is movably installed at the gantry (3), a gear (16) is installed on the drive shaft (15), and a rack (17) is installed on the frame (1). The gear (16) meshes with the rack (17) so that the gantry (3) can move along the slide rail (14).

7. The automated cutting and splicing integrated sewing machine according to claim 1, characterized in that, Each of the slide rails (14) is fixed with a pair of slide columns (18), and a movable plate (19) is slidably arranged on the two slide columns (18). Two pressure plates (20) are fixed between the two movable plates (19) at intervals, and the two pressure plates (20) are located on both sides of the gantry frame (3).

8. The automated cutting and splicing integrated sewing machine according to claim 7, characterized in that, Both sides of the frame (1) are fixed with cylinders (22), and the output end of the cylinder (22) is fixedly connected to the moving plate (19) so as to drive the pressing plate (20) to move and press the fabric through the moving plate (19).

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